Once there was a giant named Grumbler. Nobody ever dared to ask how tall he was, but he was as big as a house! He must have been twenty feet tall. Grumbler lived on the highest hill in the land. Grumbler often played mean tricks on the people in town. He stole their horses and scared their children.
Which sentence from the paragraph BEST supports the idea that Grumbler is a bad giant?

A) He must have been twenty feet tall.
B) Once there was a giant named Grumbler.
C) Grumbler lived on the highest hill in the land.
D) He stole their horses and scared their children.